12.Given 1000 cm of a 2 M NH,CI solution: [N = 14g/mol, H = 1g/mol, Cl = 35.5g/mol, density of H,0 = 1.00g/ml] i. How much water must be added to bring the concentration to 0.5 M. ii. Determine the percent ammonium (NH,) in the new solution